56results about How to "Strong drainage" patented technology

The invention relates to a sedum lineare brick and a manufacturing method thereof, belongs to green plants, and mainly solves the technical problems that the existing greening turf grass seedling is prone to damage, complex in post-maintenance and inconvenient in transportation, the roots of the existing greening turf grass seedling easily damage the roof. According to the technical scheme, the sedum lineare brick comprises a plastic frame (1). A protruding block protruding out of the bottom surface is disposed at the bottom of the plastic frame (1). The sedum lineare brick is characterized in that the plastic frame (1) comprises a filter layer (4), a base material layer (3) and a sedum lineare layer (2) from bottom to top, a reverse edge (6) is disposed at the top of the plastic frame (1), and a thin mesh object nutrition layer is disposed above the base material layer (3). The sedum lineare brick is mainly applicable to roof greening.

The invention discloses a method of cultivating rice by layer construction and utilization of straw and soil and solves the problems of crop stalk returning, soil aeration and water-fertilizer coupling. The method includes the steps of 1, performing a bed-furrow project on a rice field for the whole year; 2, performing moisture management before each season of crop harvesting; 3, treating stalks of crops of each season; 4, clearing beds and furrows and spreading soil; 5, planting crops; 6, performing field management; 7, harvesting the crops. The method has the advantages that the soil arable layer structure is changed, and a mud layer, a straw layer and a soil layer are formed from top to bottom; the method is good for deeply placing chemical fertilizers and improving availability of the fertilizers; water content of bed soil is decreased, soil aeration is improved, and availability of natural rainfall is improved; the rice field production process is free of tillage, straw burning and field steeping, ecological benefits are significant, operational energy consumption is reduced, haze is decreased, and irrigation water is decreased.

An energy dissipation, shock absorption and anti-liquefaction rigid and flexible slide-resistant pile and a construction method belong to the slope supporting technology field. The energy dissipation, shock absorption and anti-liquefaction rigid and flexible slide-resistant pile is composed of a hollow tubular pile, broken stones, anchor cables and air cushions, wherein the hollow tubular pile comprises first-type hollow tubular piles and second-type hollow tubular piles, which are all prefabricated with reinforcement concrete; crossed plates are embedded in an external barrel; water permeating holes are formed in the external barrel in a plum blossom shape; anchor cables penetrate through the hollow tubular piles and the air cushions are covered at the outer side; one first-type hollow tubular pile and many second-type hollow tubular piles are arranged in sequence in the pile holes of a slope body; the tops and the bottoms of the hollow tubular piles are embedded with one another; the hollow tubular pile is filled with the broken stones and a cover plate is arranged on the top; the anchor cables are anchored on the bottom plate and the cover plate through an anchorage device and the air cushions are full of gas. The slide-resistant pile is prefabricated, assembled and formed to be a rigid and flexible body, has high load-bearing capacity, plays a role in well dissipating energy under earthquake condition, has good drainage capacity and prevents soil around the pile from being liquefied; the construction method is simple and quick and the engineering cost is low.

The invention discloses a double-cropping rice based ecological ditch cultivation method for triple-cropping winter crops, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch cultivation method includes the steps of 1), executing ditching engineering in a late rice field; 2), performing water management before harvesting late rice; 3), treating late rice stalks; 4), utilizing a chained ditcher to clean ditches and spread out mud; 5), planting winter crops; 6), performing field management; 7), harvesting the winter crops. The double-cropping rice based ecological ditch cultivation method has the advantages that an arable layer structure of soil is changed; full amount field returning and deep burying treatment of the crop straws can be realized at one step, and meanwhile, fertilizer is deeply applied, utilization rate of the fertilizer can be increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage and non-straw burning of the winter crops are realized, and ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced.

The invention relates to a water-fluctuation zone self-locking wave-dissipation vegetation ecological slope protecting components, which consists of two bricks with foursquare as basic shape; wherein, one of the brick is provided with linked grooves at four sides thereof respectively, a cell body is arranged in the middle of the brick, which has an upward heave and a planting hole in the middle, and a counter-arc jettied convex body is mounted on periphery adjoiner of the superface cell body of the brick; the other brick is provided with linked wedge blocks for intercalation with the linked grooves, a cell body is also mounted in the middle of the brick, and counter-arc jettied convex body is arranged on periphery on periphery adjoiner of the superface cell body of the brick; the undersurfaces of the two bricks are provided with wedges to wedge into soil; the cross-sectional shape of the counter-arc jettied convex body is similar to an isosceles trapezoid, while the upper bottom is larger than the lower bottom and the two waists are in the shape of arc. The invention realizes connection between two components of two bricks by using four-side self-locking structure, which features high stability, strong adaptability, good effect of wave dissipation and environmental protection.

The invention discloses a double-cropping rice based ecological ditch direct-seeding cultivation method for triple-cropping early rice, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch direct-seeding cultivation method includes the steps of 1), executing ditch engineering in a winter crop field; 2), performing water management before harvesting winter crops; 3), treating winter crop stalks; 4), cleaning ditches and spreading out mud; 5), directly seeding early rice; 6), performing field management; 7), harvesting the early rice. The double-cropping rice based ecological ditch direct-seeding cultivation method has the advantages that an arable layer structure of soil is changed; deep application of fertilizer is benefited and utilization rate of the fertilizer is beneficially increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage, no-straw burning and no-filling and soaking of field water in transplanting the early rice are realized; and ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced.

The invention discloses an efficient water sucking-draining pipe for the inner part of a rock-soil body. The efficient water sucking-draining pipe sequentially includes a protective layer, a water sucking layer and a water draining layer from outside to inside; the water draining layer includes a cylinder-shaped matrix, one end of the matrix extends outwards to form an evaporation end surface in ahorn shape, a plurality of axial capillary channels are correspondingly and evenly formed in the matrix and the evaporation end surface in the circumferential direction, and each of the capillary channels communicates with the external through capillary grooves formed in the radial direction; the evaporation end surface is placed on the outer part of the side slope rock-soil body in burying; thewater sucking layer includes a moisture absorbing-releasing fiber layer, the outer wall of the matrix is wrapped by the moisture absorbing-releasing fiber layer, and the moisture absorbing-releasing fiber layer is tightly attached to the capillary grooves, and the evaporation end surface is not wrapped by the moisture absorbing-releasing fiber layer; the protective layer includes a permeable earthwork filtering cloth, the outer part of the moisture absorbing-releasing fiber layer is wrapped by the permeable earthwork filtering cloth, and a plurality of fixing rings are arranged on the outer part of the permeable earthwork filtering cloth. According to the efficient water sucking-draining pipe, moisture in the wide-range soil body on the periphery can be actively sucked and quickly drained,capacities of water sucking and draining are high, the efficiency is high, and the water sucking range is wide.

A hydroximated water-soluble polyelectrolyte inverse microemulsion and a preparation process thereof are disclosed, wherein, the emulsion comprises: water phase, oil phase, a hydroximating agent and an inverse agent; the process comprises: formulating sodium hydroxide, pyrosulfite, VA-044 and potassium bromate into solution with deionized water; adding deionized water into a reaction kettle and then sequentially adding acrylamide and acrylic acid; lowering the temperature after dissolution and adding sodium hydroxide solution to control the temperature, adding sodium acetate, sodium formate and diethylene triaminepentaacetic acid pentasodium salt to formulate into the water phase, feeding in high-purity nitrogen to drive away oxygen; adding white oil, span80, Tween81 into a dissolving tank to formulate into the oil phase, feeding in pure nitrogen to drive away oxygen; adding the oil phase into the water phase, adding AIBN and VA-044 after nitrogen is filled up to drive away oxygen, adding sodium pyrosulfite solution for three times with every 40 minutes once in order to control the temperature, then heating up for reaction; heating up once again, adding hydroxylamine hydrochloride for reaction, and dropping the temperature; then adding NP-10 to prepare the target substance for being discharged.

The invention belongs to the field of cells, and discloses a membrane electrode, a preparation method thereof and a fuel cell. The membrane electrode comprises a proton exchange membrane, an anode catalyst layer is arranged on one side surface of the proton exchange membrane, and a cathode catalyst layer is arranged on the other side surface of the proton exchange membrane; the cathode catalyst layer comprises a hydrophilic catalyst layer and a hydrophobic catalyst layer which are arranged in a laminated mode; the hydrophilic catalyst layer is located between the proton exchange membrane and the hydrophobic catalyst layer; the hydrophilic catalyst layer comprises hydrophilic carbon nanofibers; and the hydrophobic catalyst layer comprises hydrophobic carbon nanofibers. According to the membrane electrode disclosed by the invention, a perfluorosulfonic acid polymer can keep a good hydration degree under low-current discharge, water can be drained as soon as possible to prevent a cathode from being flooded under high-current discharge, and meanwhile, the proton exchange membrane can also keep good conductivity.

The invention discloses an insect-prevention waterproof and fireproof power distribution apparatus. The power distribution apparatus has high water discharge capacity, can prevent rain water permeation in a rainy day to cause power control equipment fault, and has insect prevention and fireproof functions and simple structure; by virtue of the power distribution apparatus, power utilization safetycan be safeguarded fully; the whole apparatus is relatively sealed without more holes, so that mosquitoes and other insects entry can be prevented; through an adjustment nut, the height of the wholeapparatus can be adjusted; the apparatus is far from low-lying areas and the ground with insects, so that insect-prevention and waterproof properties are realized; when there is much water accumulation in the apparatus, a driving motor drives a gear, a cross beam declines, and a water pump extracts the accumulated water to a water liquid collection room; in a rainy day, a hydraulic rod backs off,and a waterproof plate is expanded; in sunny days, the hydraulic rod extends and the waterproof plate is stored, so that rainwater avoidance is realized; for realizing the fireproof property, a fireproof layer is arranged on the outer surface of the power distribution box; by virtue of setting of a reinforcing plate and a metal net, the rigidity of the whole apparatus is improved; and by virtue ofsetting of a decorative surface layer, the attractive degree is improved.

The invention discloses a decoration method of utilizing green stalks vegetation carpet to afforest roof, which comprises the following steps: (1) cleaning the roof and keeping the roof tidy, sweeping the building rubbish and sundries; (2) conducting waterproof inspection to the roof, observing if water leakage phenomenon exists through large area water spray or water injection, and implementing the second waterproofing work if necessary; (3) laying a split layer, a root-stopping layer and; (4) building a cofferdam on the roof according the requirements and laying down a filter layer in cofferdam; (5) laying down light nutrient substrate on the filter layer; (6) laying down green stalks vegetation carpet; (7) spreading evenly seeds on green stalks vegetation carpet as the required and watering the seeds in time to keep the seeds budding; (8) cleaning up the construction site and removing construction waste, the construction being over.

The invention discloses a double-cropping rice based ecological ditch transplanting cultivation method for triple-cropping early rice, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch transplanting cultivation method includes the steps of 1), executing ditch engineering in a winter crop field; 2), performing water management before harvesting winter crops; 3), treating winter crop stalks; 4), cleaning ditches and spreading out mud; 5), transplanting early rice; 6), performing field management; 7), harvesting the early rice. The double-cropping rice based ecological ditch transplanting cultivation method has the advantages that an arable layer structure of soil is changed, a sludge layer, a straw layer and a soil layer are formed from top to bottom; deep application of fertilizer is benefited and utilization rate of the fertilizer can be increased; good water discharge capacity of narrow ditch surfaces and good water-holding capacity of the ditches are utilized; no-tillage, no-straw burning and no-filling and soaking of field water in transplanting the early rice are realized; and ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced.

The invention discloses a permeable double-row retaining wall for urban buildings, and belongs to the technical field of foundation maintenance of the urban buildings. A water delivering pipe is pre-buried in a concrete base, and upper-layer concrete wall bodies of the retaining wall are connected with the concrete base arranged below the ground; the first row of concrete wall body and the secondrow of concrete wall body are connected through a reinforcing rib plate to form a hollow trapezoid body, and groove interior permeable holes are formed in the bottom of the hollow trapezoid body; a plurality of rows of permeable holes are formed in the second row of concrete wall body and penetrate through the concrete wall body; and a gravel backfill layer is laid on the hollow trapezoid body. The retaining wall is good in structural stress performance, easy to implement, good in stability, small in size and low in self-weight, and has good drainage capacity, and meanwhile through combinationof the double-row concrete wall bodies and the reinforcing plate, the anti-sliding and anti-toppling capability of the retaining wall is enhanced.

The invention relates to a preparation method of a sponge structure iron / SiC particle-based oil-water separation enhancement layer material capable of being applied to separation treatment of oily sewage on a large scale. The preparation method comprises the steps of preparing a sponge structure iron / SiC nano particle matrix through composite electrodeposition; and preparing a SiC nano particle super-hydrophobic / super-oleophylic enhancement layer on the surface of the matrix through etching / modification. The method specifically comprises the processes of (1) composite electrodeposition of the sponge structure iron / SiC nano particle matrix; (2) surface etching of the sponge structure iron / SiC nano particle matrix; and (3) surface super-hydrophobic / super-oleophylic modification of the sponge structure iron / SiC nano particle matrix. A novel oil-water separation material prepared through the method has the characteristics that the specific surface area is large, the oil and water separation efficiency is high, and the separation treatment process of the oily sewage is environment-friendly, and can be applied to separation treatment of oily sewage on a large scale.

The invention provides a railway road shoulder. The railway road shoulder comprises a cable trough; a permeable rubble layer arranged at the bottom of the cable trough and on one side close to a railway; a gabion shoulder pad arranged on one side, far away from the railway, of the cable trough, and permeable to water; wherein the bottom and the side surface of the cable trough are provided with drain holes communicated with the gabion shoulder pad, so that water in the cable trough can be drained through the drain holes and the gabion shoulder pad. According to the gabion road shoulder, accumulated water in the cable trough can be drained through the drain holes and the gabion shoulder pad, accumulated water in the roadbed can be drained through the permeable rubble layer and the gabion shoulder pad, and the drainage capacity is excellent.

An energy dissipation, shock absorption and anti-liquefaction rigid and flexible slide-resistant pile and a construction method belong to the slope supporting technology field. The energy dissipation, shock absorption and anti-liquefaction rigid and flexible slide-resistant pile is composed of a hollow tubular pile, broken stones, anchor cables and air cushions, wherein the hollow tubular pile comprises first-type hollow tubular piles and second-type hollow tubular piles, which are all prefabricated with reinforcement concrete; crossed plates are embedded in an external barrel; water permeating holes are formed in the external barrel in a plum blossom shape; anchor cables penetrate through the hollow tubular piles and the air cushions are covered at the outer side; one first-type hollow tubular pile and many second-type hollow tubular piles are arranged in sequence in the pile holes of a slope body; the tops and the bottoms of the hollow tubular piles are embedded with one another; the hollow tubular pile is filled with the broken stones and a cover plate is arranged on the top; the anchor cables are anchored on the bottom plate and the cover plate through an anchorage device and the air cushions are full of gas. The slide-resistant pile is prefabricated, assembled and formed to be a rigid and flexible body, has high load-bearing capacity, plays a role in well dissipating energy under earthquake condition, has good drainage capacity and prevents soil around the pile from being liquefied; the construction method is simple and quick and the engineering cost is low.

The invention discloses a concrete road. The concrete road is formed by laying a base layer and a wear-resistant layer, wherein the wear-resistant layer is directly applied on the base layer, the baselayer is a concrete base layer, the wear-resistant layer is a permeable concrete layer modified by a polymer elastomer, the thickness of the permeable concrete layer is less than 4 centimeters, the void content is 5%-20% of the volume, the optimized void content is 5%-10% of the volume, and the largest diameter of an elastomer aggregate which exists in the permeable concrete layer modified by theelastomer is 10 mm. According to the concrete road, the mechanical performance is good, the bending / compressive strength ratio is high, compared with traditional permeable concrete, the concrete roadhas higher anti-fouling capability and high bonding strength, slip resistance and drainability, and multiple aspects of performance of the concrete road are close to the performances of a bituminouspavement, while the cost is far lower than the cost of the bituminous pavement.

The present invention provides a water permeable brick, which comprises a water permeable base layer and a water permeable surface layer covering on the water permeable base layer, wherein the water permeable base layer is formed through curing a mixture containing a first aggregate and a first binder, the water permeable surface layer is formed through curing a mixture containing a second aggregate and a second binder, and the second binder contains a hydrophilic binder. The water permeable brick further comprises at least a water flow pore channel positioned inside the water permeable base layer, wherein the water flow pore channel penetrates through both side surfaces of the water permeable base layer. The water permeable brick has excellent water permeability, and can not cause foundation loosing.

The invention relates to a water-fluctuation zone self-locking wave-dissipation vegetation ecological slope protecting components, which consists of two bricks with foursquare as basic shape; wherein,one of the brick is provided with linked grooves at four sides thereof respectively, a cell body is arranged in the middle of the brick, which has an upward heave and a planting hole in the middle, and a counter-arc jettied convex body is mounted on periphery adjoiner of the superface cell body of the brick; the other brick is provided with linked wedge blocks for intercalation with the linked grooves, a cell body is also mounted in the middle of the brick, and counter-arc jettied convex body is arranged on periphery on periphery adjoiner of the superface cell body of the brick; the undersurfaces of the two bricks are provided with wedges to wedge into soil; the cross-sectional shape of the counter-arc jettied convex body is similar to an isosceles trapezoid, while the upper bottom is larger than the lower bottom and the two waists are in the shape of arc. The invention realizes connection between two components of two bricks by using four-side self-locking structure, which features high stability, strong adaptability, good effect of wave dissipation and environmental protection.

The invention discloses a double-cropping rice based ecological ditch transplanting cultivation method for triple-cropping late rice, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch transplanting cultivation method includes the steps of 1), executing ditch engineering in an early rice field; 2), performing water management before harvesting early rice; 3), treating early rice stalks; 4), allowing a chained ditcher to clean ditches and spread out mud; 5), transplanting late rice; 6), performing field management; 7), harvesting the late rice. The double-cropping rice based ecological ditch transplanting cultivation method has the advantages that an arable layer structure of soil is changed; deep application of fertilizer is benefited and utilization rate of the fertilizer is beneficially increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage, no-stubble cleaning, no-straw burning and no-filling and soaking of field water in late rice transplanting are realized, ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced, and pesticide stubble cleaning is omitted.

The invention discloses a permeable pavement structure and a pavement paving method. The permeable pavement structure comprises a base, a blind road part laid on a top surface of the base and a drainage part located on one side, close to a non-motorized vehicle lane, of the blind road part. The base is provided with a first drainage closed conduit, and a first side drainage port is formed in an outer side wall of the base. The blind road part is formed by paving blind road bricks, and a top surface of the blind road part is provided with a water guide inclined surface for guiding rainwater tothe top surface of the drainage part; the drainage part is composed of drainage brick units, and each drainage brick unit comprises a drainage base and a drainage screen cover; and a drainage groove penetrating through an end surface of the drainage screen cover in the length direction is formed in the bottom of the drainage screen cover, and a plurality of water passing holes connected with the drainage groove are formed in the top surface of the drainage screen cover. The drainage base is provided with a siphon channel used for draining rainwater in the drainage groove into the first drainage closed conduit. The pavement structure has an effect of improving a drainage capacity of the pavement surface of a sidewalk.

A pneumatic vehicle tire of radial construction having a tread with at least one tread band (1) bounded laterally by at least one circumferential groove (2) and circumferentially Circumferential in direction, the tread band is equipped on its circumference with at least one row of lugs (3', 4', 5') having a plurality of lugs (3, 4, 5, 6) extending parallel to each other , 6'), wherein each transverse groove (3, 4, 5, 6) has a groove bottom (9) and two groove walls (10a, 10b) and two connected first and a second groove section (7, 8), which enclose an obtuse angle (α) with respect to the center line of the transverse groove (3, 4, 5, 6) extending in the direction of the groove, wherein the sipe segments (7, 8) are respectively bounded on the outer surface of the tread band by two rectilinearly extending sipe edges (7a, 7b, 8a, 8b), and wherein the first sipe segment (7 ) are connected to the groove edges (8a, 8b) of the second groove section (8). The first sipe section (7) extends at an angle (β) of up to 20° with respect to the axial direction, the second sipe section (8) at an angle of 30° to 50° with respect to the axial direction (γ) extension, wherein in each groove section (7, 8) at each groove wall (10a, 10b) is provided with a bevel forming towards and along the groove wall (10a, 10b) bounding Chamfers (11a, 11b) extending from the groove edges (7a, 8b), wherein the chamfers (11a, 11b) extend along the groove edges (7a, 8b) which are not connected to one another.

An externally-used Chinese herbal medicine cream comprises the following raw material drugs by weight: 10-20g of gynura segetum, 3-10g of radix angelicae, 9-18 g of radix ampelopsis, 3-10 g of garden burnet, 8-18 g of rubus crataegifolius bunge, 8-15 g of polygonum cuspidatum, 10-20 g of thalictrum, 5-15 g of radix scutellariae and 200-300 g of sesame oil, and has the main characteristics of quick effect and low cost, after the Chinese herbal medicine cream is used by a patient, the Chinese herbal medicine cream can significantly effect in the same day, pains are relieved, the patient can be recovered in 3-7 days, and no scar is left.

The invention discloses a double-cropping rice based ecological ditch direct-seeding cultivation method for triple-cropping late rice, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch direct-seeding cultivation method includes the steps of 1), executing ditch engineering in an early rice field; 2), performing water management before harvesting early rice; 3), treating early rice stalks; 4), allowing a chained ditcher to clean ditches and spread out mud; 5), directly seeding late rice; 6), performing field management; 7), harvesting the late rice. The double-cropping rice based ecological ditch direct-seeding cultivation method has the advantages that an arable layer structure of soil is changed; deep application of fertilizer is benefited and utilization rate of the fertilizer is beneficially increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage, no-stubble cleaning, no-straw burning and no-filling and soaking of field water of the late rice transplanting are realized, ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced, and pesticide stubble cleaning is omitted.

The invention relates to the technical field of health products, and discloses a five-poison desman and desman meat thereof. Efficacy features of snake poison, scorpion poison, centipede poison, toad poison and a gecko extract are used for combating poisons with poisons; through modification and adjustment of a formula for more than 100 times as well as scientific compatibility, in combination with the desman meat often eaten in daily lives of people, and through simple daily eating of the desman meat, the efficacies of Yin and Yang coordination, two-way adjustment and comprehensive conditioning of the functions of a human body are achieved, the physique and the immunity of the human body are improved and enhanced, difficult miscellaneous diseases are prevented and treated, and health care and life prolonging are achieved. Safety risks are avoided and eating is facilitated; the essence of traditional Chinese medicine and a modern medical theory are combined, toxicological and functional inspection reports are qualified, and health food regulations of the State Food and Drug Administration are met.

The invention relates to a pneumatic vehicle tire, comprising a tread, which has at least one shoulder-side profile rib (1), which is structured in the manner of lugs and extends peripherally in the circumferential direction and in which incision-like transverse grooves (3) extend in the axial direction, which are each composed of three groove segments (3a, 3b, 3c), a middle groove segment (3a), a groove segment (3b) that extends toward the inside of the tread and ends within the profiled rib (1), and a groove segment (3c) that extends toward the outside of the tread and ends outside of the ground contact area. The transverse grooves (3) extend substantially linearly overall, wherein the middle groove segment (3a) extends over at least 60% of the axial extend of the transverse grooves (3) and has a depth (T), which is substantially constant over the extent of the middle groove segment, of 5 mm to 7 mm and, in cross-section, has two groove flanks (5, 6) extending substantially in the radial direction and having a mutual distance of 0.4 mm to 1.2 mm, wherein a bevel (6a) extending at an angle (β) of 30° to 50° to the radial direction adjoins one of the groove flanks (6) near the rib outer surface, wherein the middle groove segment (3a), continuing the border edges thereof present on the rib outer surface, transitions into the groove segment (3c) extending toward the outside of the tread, which groove segment has an end segment (3'c), which has a U-shaped cross-section and a depth (t2) of 1.0 mm to 1.5 mm.

The invention relates to the technical field of engineering construction, and discloses a stone material for aprons and an installation method. The stone material includes an outer wall, the right side of the outer wall is fixedly connected with a stone material body, stone material gaps are formed in the upper surface of the stone material body, a caulking material is arranged between the stone material body and the outer wall, deformation joints located at the backs of the stone material gaps are formed in the upper surface of the stone material body, and an installation plate is arranged above the stone material body. According to the stone material for aprons and the installation method, the structural reliability and safety are high, the general apron design is abandoned, a reinforcedconcrete cushion is arranged, and vertical and horizontal deformation joints are arranged. The position of the cushion and the block deformation joints is the same, it is ensured that the structuraldeformation and settlement of different sections are similar, the block drainage is high, and the structural safety is ensured. The aprons can be adjusted according to the shape and position of the main structure to adapt to the construction needs of various construction sites, the adaptability is high, the construction quality is easier to guarantee, the work efficiency is improved, and the construction progress is sped up.

The invention discloses a reinforced hot melt pile / reinforced gravel pile composite roadbed structure in a degenerated permafrost region, and relates to a roadbed structure in the degenerated permafrost region, and aims to solve the technical problems that at present, road thaw collapse damage caused by permafrost region frozen soil degradation cannot be effectively controlled, moisture cannot berapidly discharged after frozen soil is thawed, a foundation becomes a soft foundation, the bearing capacity of the foundation is insufficient, and uneven settlement of a road occurs. The multiple reinforced hot melting piles and the multiple reinforced gravel piles are vertically arranged in the permafrost foundation, the upper-layer unfrozen soil foundation and the lower-layer unfrozen soil foundation. According to the novel roadbed structure for the degeneration type high-temperature permafrost region, two different pile bodies, namely the reinforced hot melting pile and the reinforced gravel pile, are used for forming a novel binary pile composite roadbed, the melting effect of heat released by the hot melting pile on frozen soil and the excellent drainage capacity of the gravel pile are combined, and pre-melting of the frozen soil and drainage consolidation of the melted soil can be achieved at the same time.